i40e_devlink_create_port(9)

💅 i40e_devlink_create_port(9) 💅

okay so bestie, welcome to the Kernel API Manual — yes, that's the manual name, we're fancy here ✨ — and today's main character is i40e_devlink_create_port. she creates a devlink port for a PF. that's the whole vibe. let's get into it 🎀

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🌸 NAME 🌸

i40e_devlink_create_port — creates a devlink port for this PF, no cap 👑

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✨ SYNOPSIS ✨

int i40e_devlink_create_port (struct i40e_pf *pf );

like, that's the whole signature. short. iconic. periodt 💅

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🦋 ARGUMENTS 🦋

• pf — the PF you're making a port for. that's it. that's the argument 🫶

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💖 DESCRIPTION 💖

so what she actually does: she creates and registers a devlink_port for this PF. both. not just one. the way she does the most 💅

but here's the little plot twist you need to know 📌 — even though each physical function is connected to a separate devlink instance (yes, separate, like they each got their own group chat 😭), the port is still numbered according to the physical function id. so the numbering stays loyal to the PF id no matter which devlink instance you're chilling in. iykyk 🌈

ngl this is one of those details you skim and then regret skimming. the port number follows the physical function id. always. write it down bestie 📝

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⭐ RETURN ⭐

• zero on success 🥳 — slay, it worked
• an error code on failure 😭 — it's giving "not today"

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🔥 SEE ALSO 🔥

• the kernel file, literally right here: ./drivers/net/ethernet/intel/i40e/i40e_devlink.c 🗂️
• i40e_alloc_pf(9)
• i40e_free_pf(9)
• i40e_devlink_register(9)
• i40e_devlink_unregister(9)
• i40e_devlink_set_switch_id(9)
• i40e_devlink_destroy_port(9)

like a whole friend group of functions honestly, go say hi to all of them 🫶✨

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and that's the page!! 💜 this came out of ./drivers/net/ethernet/intel/i40e, dated October 2026 — so mark your calendar bestie, and remember: create the port, register the port, keep the PF id numbering. mwah 🎀💖🌸